A space on-orbit turntable limiting mechanism

Abstract

The present invention discloses a space on-rail turntable limiting mechanism in the field of space on-rail technology, comprising a track, a suspension plate and a limiting plate, wherein both sides of the suspension plate are fixedly connected to the limiting plate, the bottoms of the suspension plate and the limiting plate are both provided with suspension grooves of the same track, the suspension plate and the limiting plate slide in cooperation with the suspension grooves, a plurality of electromagnets for forming magnetic levitation are fixedly connected around the inner wall of the suspension groove at the bottom of the suspension plate and the outer wall of the track, a distance measuring groove is provided at the bottom of the suspension groove, an ultrasonic distance meter is fixedly connected at the bottom of the track, and the distance measuring groove is located below the ultrasonic distance meter; a plurality of potential sensors are fixedly connected around the inner wall of the suspension groove at the bottom of the limiting plate, a plurality of friction points are fixedly connected on the side of the potential sensor close to the track, and a friction belt is fixedly connected on the outer wall of the track. The present invention is scientific and reasonable, and the current intensity of the electromagnet is controlled by a controller, thereby dynamically adjusting the suspension gap between the turntable and the track, thereby achieving precise dynamic limiting of the space on-rail turntable.

Description

Technical Field

[0001] The invention belongs to the field of space on-orbit technology, in particular to a space on-orbit turntable limiting mechanism. Background Art

[0002] With the further development and utilization of space resources by humans, the demand for the construction of large-scale space facilities is increasing. The space on-orbit turntable plays an important role in this process. It can assist in completing tasks such as docking, transfer and assembly between modules, ensuring the smooth progress of the on-orbit construction of large-scale space facilities. The space on-orbit turntable limit mechanism is a key component used in space robots or spacecraft to limit the range of motion of the turntable. These mechanisms are generally used to ensure that the turntable operates within a safe range of motion to avoid structural damage or mission failure caused by exceeding design limits. The design and application of on-orbit turntable limit mechanisms are crucial to the success of space missions, especially when performing on-orbit servicing, assembly and maintenance operations.

[0003] Although turntable limiters play an important role in space applications, they also face a series of technical challenges and problems. Under the extreme conditions of the on-orbit environment, turntable limiters must have a high degree of reliability and safety to prevent failures during critical missions. The turntable limiter needs to be able to precisely control the position and movement of the turntable to ensure accurate execution of the mission during the movement process.

[0004] In summary, the inability of the turntable limiting mechanism to dynamically and accurately limit the position has become a problem that urgently needs to be solved by technicians in this field. Therefore, it is necessary to propose a space on-orbit turntable limiting mechanism. Summary of the Invention

[0005] To solve the above problems, the present invention discloses a space on-track turntable limiting mechanism, which generates electrical energy through the friction point and friction belt on the potential sensor through the principle of frictional electrification. The energy recovery device collects and stores this electrical energy in the battery. Then, the controller measures the offset distance between the suspension plate and the limit plate and the track through feedback from the potential sensor and the ultrasonic rangefinder. The controller controls the switching and current intensity of the electromagnet, thereby dynamically adjusting the suspension gap between the suspension plate and the limit plate and the track, thereby realizing precise dynamic limiting of the space on-track turntable.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows:

[0007] A space on-track turntable limiting mechanism includes a track, a suspension plate, and a limiting plate. The limiting plates are fixedly connected on both sides of the suspension plate. The suspension plate and the limiting plate have suspension grooves at their bottoms. The suspension plate and the limiting plate slide in cooperation with the suspension grooves. Several electromagnets for forming magnetic levitation are fixedly connected around the inner wall of the suspension groove at the bottom of the suspension plate and the outer wall of the track. A ranging groove is opened at the bottom of the suspension groove. An ultrasonic rangefinder is fixedly connected to the bottom of the track. The ultrasonic rangefinder is used to monitor the motion trajectory of the ranging groove.

[0008] Several potential sensors are fixedly connected around the inner wall of the suspension groove at the bottom of the limit plate. Several friction points are fixedly connected to the side of the potential sensor close to the track. A friction belt for generating electricity by friction with the friction points is fixedly connected to the outer wall of the track. An energy recovery device is fixedly connected to the bottom of the limit plate, and the energy recovery device is electrically connected to the potential sensor. A controller and a battery are fixedly connected to one side of the suspension plate and the inner wall of the limit plate. The potential sensor, energy recovery device, ultrasonic rangefinder, electromagnet and battery are all electrically connected to the controller.

[0009] The above solution achieves the following principles and beneficial effects:

[0010] Basic Principle: Electromagnets are fixed around the inner walls of the suspension grooves at the bottom of the suspension plate and the limit plate, as well as the outer walls of the track. These electromagnets control the current intensity through a controller to generate a magnetic field, allowing the suspension plate and the limit plate to achieve magnetic levitation on the track. The potential sensor at the bottom of the limit plate is provided with friction points, which come into contact with the friction belt on the outer wall of the track and generate electricity through friction. The energy recovery device is electrically connected to the potential sensor, collects the electrical energy generated by frictional electricity, and boosts the DC power through a transformer, ultimately storing it in a battery. Based on the feedback from the potential sensor and the ultrasonic rangefinder, the controller dynamically adjusts the current intensity of the electromagnet through the intelligent control algorithm module, thereby changing the suspension gap between the suspension plate and the limit plate and the track to achieve dynamic limiting.

[0011] Furthermore, a number of counterweights for adjusting movement posture are embedded in the inner walls of the suspension plate and the limiting plate.

[0012] Beneficial Effect: While adjusting the electromagnet current to control the suspension gap, the controller also uses counterweights to further optimize the motion of the suspension and limit plates. This multi-parameter coordinated control approach improves system control precision, enabling the system to more accurately achieve the desired motion trajectory and posture.

[0013] Furthermore, an elastic layer for reducing track wear is fixedly connected to the inner walls of the suspension grooves of the suspension plate and the limiting plate.

[0014] Benefits: The elastic layer acts as the direct contact surface between the suspension plate, the limit plate, and the track, absorbing and dissipating the friction and impact forces generated by relative motion. This buffering effect significantly reduces wear on the track surface and extends the track's service life.

[0015] Furthermore, a transformer is provided in the energy recovery device, which is used to boost the direct current generated by the potential sensor through frictional electricity, and then store it in a battery.

[0016] Beneficial effects: The transformer can boost the voltage of direct current, ensuring that the electric energy generated by frictional electricity efficiently reaches the voltage standard acceptable to the battery, thereby improving the efficiency of electric energy storage.

[0017] Furthermore, the electromagnet is made of nickel-iron alloy, and the controller is preset with an intelligent control algorithm module, which dynamically adjusts the current of the electromagnet according to feedback from the potentiometer and the ultrasonic rangefinder.

[0018] Beneficial Effects: Nickel and iron alloys have extremely high magnetic permeability and low hysteresis losses, making them suitable for precision electromagnetic applications. This allows the electromagnet in the magnetic levitation system to more effectively resist external interference and maintain a stable suspension gap between the levitation disk and the limit disk and the track.

[0019] Furthermore, a remote communication module is provided in the controller, which maintains communication with the ground control center through a satellite communication link, receives control instructions and uploads operating status data.

[0020] Beneficial Effects: Real-time communication and monitoring capabilities help promptly detect and address system failures or anomalies, preventing them from escalating or causing more serious problems. Furthermore, the ground control center can remotely diagnose and repair system failures through the remote communication module, reducing downtime and losses caused by system failures.

[0021] Furthermore, the tops of the suspension plate and the limiting plate are coated with a radiation-proof coating.

[0022] Beneficial Effects: Radiation exposure can not only cause electronic components to malfunction but also accelerate their aging process, shortening their service life. Applying radiation-blocking coatings can reduce the cumulative damage to system components, lowering the failure rate and improving the overall reliability and durability of the system. This is particularly important for space equipment that requires long-term in-orbit operation.

[0023] Furthermore, the suspension plate and the limit plate are redundantly connected using GH5605 alloy.

[0024] Benefits: GH5605 alloy is a high-performance alloy with excellent mechanical properties and high-temperature stability. Using this alloy as a connecting material significantly enhances the connection strength between the suspension plate and the limit plate, ensuring a stable connection even under extreme operating conditions. The redundant connection design adds additional connection points to the existing connection. This design enhances connection redundancy, ensuring that even if one connection point fails or is damaged, the other connection points remain connected, thereby improving the reliability of the entire connection.

[0025] Furthermore, a plurality of temperature sensors are embedded in the electromagnet and the friction belt, and the temperature sensors are electrically connected to the controller.

[0026] Benefits: The temperature sensor accurately measures the temperature of the electromagnet and friction belt during operation, ensuring accurate and real-time data. This precise temperature monitoring helps detect temperature anomalies promptly, preventing equipment damage or performance degradation caused by overheating.

[0027] Furthermore, the friction belt is made of carbon fiber composite material.

[0028] Beneficial effects: Carbon fiber composite materials have an extremely high strength-to-weight ratio, meaning they are very strong yet relatively light. This property enables the friction belt to maintain stable performance when subjected to high loads and high-speed friction, while reducing the weight of the entire system. Lightweight design is particularly important for in-orbit space equipment because it can reduce launch costs, improve transportation efficiency, and save energy in long-term operation. Carbon fiber composite materials have excellent wear resistance and can maintain a low wear rate during long-term, high-frequency friction. This is crucial for friction belts because they need to withstand continuous friction to generate electricity or achieve other functions. Friction belts with good wear resistance can extend their service life and reduce the frequency of replacement, thereby reducing maintenance costs and downtime.

[0029] Beneficial effects of the present invention:

[0030] 1. The controller in this invention uses real-time feedback from a potentiometer and ultrasonic rangefinder to accurately measure the offset distance between the suspension disc and the limit disc and the track. Combined with an intelligent control algorithm module, the controller dynamically adjusts the current intensity of the electromagnet to precisely control the suspension gap and achieve precise dynamic positioning of the on-track turntable. This design improves system stability and reliability, reducing malfunctions and damage caused by excessive offset.

[0031] 2. The magnetic levitation system of this invention reduces direct contact between the levitation and limit plates and the track, thereby reducing wear. This not only extends the equipment's service life but also improves the system's operational efficiency and environmental friendliness. Through innovative designs such as energy reuse and intelligent control, it promotes the sustainable development of space technology. It not only improves the operational efficiency and reliability of space equipment but also reduces negative environmental impacts, providing strong technical support for future space exploration and utilization.

[0032] 3. The controller in this invention serves as the core component of the system, integrating an intelligent control algorithm module and a remote communication module. Through real-time data processing and remote control capabilities, the system can automatically adapt to varying operating environments and conditions, enabling intelligent operation and maintenance. Furthermore, the remote communication module facilitates real-time monitoring and troubleshooting of the system by the ground control center. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is an axonometric view of an embodiment of the present invention.

[0034] Figure 2 It is a top cross-sectional view of an embodiment of the present invention.

[0035] Figure 3 2 is a cross-sectional view of a suspension disk according to an embodiment of the present invention.

[0036] Figure 4 2 is a cross-sectional view of a limiting plate according to an embodiment of the present invention.

[0037] Figure 5 The figure is a logic flow chart of an embodiment of the present invention.

[0038] The reference numerals include: 1. track; 2. suspension plate; 3. limit plate; 4. electromagnet; 5. battery; 6. controller; 7. potentiometer; 8. anti-radiation coating; 9. counterweight; 10. suspension groove; 11. ranging groove; 12. ultrasonic rangefinder; 13. elastic layer; 14. energy recovery device; 15. friction point; 16. friction belt. DETAILED DESCRIPTION

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively. Example

[0040] This embodiment is shown in the attached Figure 1-Figure 4As shown: A space on-track turntable limiting mechanism includes a track 1, a suspension plate 2 and a limiting plate 3. The limiting plates 3 are welded on both sides of the suspension plate 2. The tops of the suspension plate 2 and the limiting plate 3 are coated with an anti-radiation coating 8. The bottoms of the suspension plate 2 and the limiting plate 3 are both provided with suspension grooves 10. The suspension plate 2 and the limiting plate 3 slide in cooperation with the suspension grooves 10. The inner walls of the suspension plate 2 and the limiting plate 3 are embedded with a number of counterweights 9 for adjusting the movement posture. The inner walls of the suspension groove 10 at the bottom of the suspension plate 2 and the outer wall of the track 1 are fixedly connected by bolts with a number of electromagnets 4 for forming magnetic levitation. The electromagnets 4 are made of nickel-iron alloy. A ranging groove 11 is provided at the bottom of the suspension groove 10. An ultrasonic rangefinder 12 is fixedly connected to the bottom of the track 1 by bolts. The ultrasonic rangefinder 12 is used to monitor the movement trajectory of the ranging groove 11.

[0041] Several potential sensors 7 are fixedly connected to the inner wall of the suspension groove 10 at the bottom of the limit plate 3 by bolts. Several friction points 15 are integrally formed on the side of the potential sensor 7 close to the track 1. A friction belt 16 for generating electricity by friction with the friction points 15 is integrally formed on the outer wall of the track 1. An energy recovery device 14 is fixedly connected to the bottom of the limit plate 3 by bolts. The energy recovery device 14 is electrically connected to the potential sensor 7. A transformer is provided in the energy recovery device 14. The transformer is used to boost the DC electricity generated by the potential sensor 7 through frictional electricity, and then store it through the battery 5.

[0042] The controller 6 and battery 5 are bolted to the inner walls of both the suspension plate 2 and the limit plate 3. The potentiometer 7, energy recovery device 14, ultrasonic rangefinder 12, electromagnet 4, and battery 5 are all electrically connected to the controller 6. The controller 6 is pre-installed with an intelligent control algorithm module that dynamically adjusts the current in the electromagnet 4 based on feedback from the potentiometer 7 and ultrasonic rangefinder 12. The controller 6 also includes a remote communication module that communicates with the ground control center via a satellite communication link, receiving control commands and uploading operational status data.

[0043] Specific implementation steps: After the suspension plate 2 and the limit plate 3 are installed on the track 1, initialization settings are first performed, including adjusting the magnetic field strength of the electromagnet 4, calibrating the ultrasonic rangefinder 12 and adjusting the sensitivity of the potentiometer 7.

[0044] Controller 6 receives initialization instructions from the ground control center via the remote communication module and confirms that all equipment is functioning normally. Controller 6 activates electromagnet 4, which utilizes the strong magnetic field generated by the rare earth permanent magnet material to create a stable magnetic levitation force between the levitation tank 10 and the track 1, causing the levitation disk 2 to hover at a preset height above the track 1. An ultrasonic rangefinder 12 continuously monitors the distance between the levitation disk 2 and the track 1 and feeds this data back to controller 6, enabling real-time adjustment of the magnetic field strength of electromagnet 4 to maintain a stable levitation height.

[0045] Based on the mission requirements, controller 6 adjusts the position of the counterweights 9 on the inner walls of suspension plate 2 and limit plate 3, changing the center of gravity distribution of suspension plate 2 and thus adjusting the movement posture of suspension plate 2. During the posture adjustment process, controller 6 comprehensively considers suspension stability, movement efficiency, and mission requirements to ensure the accuracy and safety of posture adjustment.

[0046] When the suspension plate 2 needs to reach a specific position for limiting, the controller 6 determines the distance between the suspension plate 2 and the limiting plate 3 and the track 1, and whether any deviation has occurred during movement, based on data from the ultrasonic rangefinder 12. If the suspension plate 2 and the limiting plate 3 deviate during movement, the potential sensor 7 and friction points 15 at the bottom of the limiting plate 3 come into contact with the friction belt 16 on the track 1, generating frictional electricity. The energy recovery device 14 collects this frictional electricity, boosts it through a transformer, and directly applies it to the corresponding electromagnet 4, resetting the suspension plate 2 and the limiting plate 3 to achieve dynamic limiting. Alternatively, the energy is stored in the battery 5 for energy recovery.

[0047] At the same time, the signal from the potentiometer sensor 7 is fed back to the controller 6 as a reference for position control. When the suspension plate 2 reaches the predetermined position, the controller 6 adjusts the electromagnet 4 to achieve precise position control. During stable operation of the suspension plate 2, the controller 6 continuously monitors the operating status of various devices and the motion parameters of the suspension plate 2.

[0048] The remote communication module maintains real-time communication with the ground control center, uploading operational status data and receiving control commands. If an abnormality is detected or a new control command is received, the controller 6 will immediately take appropriate countermeasures or execute new task instructions. Once the task is completed, the controller 6 guides the suspension disk 2 to a designated location for recovery or preparation for the next task. During the recovery process, the suspension disk 2 must also maintain stable suspension and precise control to ensure a safe and smooth recovery process. Example

[0049] Basically as attached Figure 3 and Figure 4 As shown: Different from the above embodiment, an elastic layer 13 for reducing the wear of the track 1 is bonded to the inner wall of the suspension groove 10 of the suspension plate 2 and the limiting plate 3.

[0050] Specific implementation steps: When the suspension plate 2 and the limiting plate 3 deviate during movement, the potential sensor 7 and friction point 15 at the bottom of the limiting plate 3 contact the friction belt 16 on the track 1, generating triboelectricity. Simultaneously, the elastic layer 13 acts as a buffer during this contact process, reducing direct wear on the track 1 by the suspension groove 10. Example

[0051] Basically as attached Figure 2As shown: Different from the above embodiment, the suspension plate 2 and the limiting plate 3 are redundantly welded with GH5605 alloy.

[0052] Specific implementation steps: During the movement of the suspension plate 2 and the limit plate 3, the preset welding points and redundant welding points of GH5605 alloy jointly bear and disperse the stress and torque generated by posture changes, thereby improving the stability and durability of the system. Example

[0053] Basically as attached Figure 3 and Figure 4 As shown: Different from the above embodiment, a plurality of temperature sensors are embedded in the electromagnet 4 and the friction belt 16 , and the temperature sensors are electrically connected to the controller 6 .

[0054] Specific implementation steps

[0055] During the movement of the suspension plate 2 and the limit plate 3, the controller 6 adjusts the temperature control strategy in real time based on feedback from the temperature sensors. If abnormal temperature fluctuations occur, the controller 6 takes prompt action to prevent damage to the equipment caused by excessively high or low temperatures. By monitoring the temperature of the electromagnet 4 and the friction belt 16 in real time, potential overheating or undercooling issues can be promptly detected and addressed, preventing equipment damage or safety accidents.

[0056] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above-mentioned embodiment, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A space on-track turntable limiting mechanism, characterized by: The invention comprises a track (1), a suspension plate (2) and a limit plate (3), wherein both sides of the suspension plate (2) are fixedly connected to the limit plate (3), the bottoms of the suspension plate (2) and the limit plate (3) are provided with suspension grooves (10), the suspension plate (2) and the limit plate (3) are slidably matched with the suspension grooves (10), the inner wall of the suspension groove (10) at the bottom of the suspension plate (2) and the outer wall of the track (1) are fixedly connected with a plurality of electromagnets (4) for forming magnetic suspension, the bottom of the suspension groove (10) is provided with a distance measuring groove (11), the bottom of the track (1) is fixedly connected with an ultrasonic rangefinder (12), and the ultrasonic rangefinder (12) is used to monitor the motion trajectory of the distance measuring groove (11); the suspension groove at the bottom of the limit plate (3) is provided with a plurality of electromagnets (4) for forming magnetic suspension, the inner wall of the suspension groove (10) and the outer wall of the track (1) are fixedly connected with the ... inner wall of the suspension groove (10) and the outer wall of the track (1) are fixedly connected with the electromagnets (4) for forming magnetic suspension, the inner wall of the suspension groove (10) and the outer wall of the track (1) are fixedly connected with the electromagnets (4) for forming magnetic suspension, the inner wall of the suspension (10) A plurality of potential sensors (7) are fixedly connected around the inner wall, and a plurality of friction points (15) are fixedly connected to the side of the potential sensor (7) close to the track (1). A friction belt (16) for generating electricity by friction with the friction points (15) is fixedly connected to the outer wall of the track (1). An energy recovery device (14) is fixedly connected to the bottom of the limit plate (3), and the energy recovery device (14) is electrically connected to the potential sensor (7). A controller and a battery (5) are fixedly connected to one side of the inner wall of the suspension plate (2) and the limit plate (3). The potential sensor (7), the energy recovery device (14), the ultrasonic rangefinder (12), the electromagnet (4) and the battery (5) are all electrically connected to the controller (6).

2. The space on-orbit turntable limiting mechanism according to claim 1, characterized in that: A plurality of counterweights (9) for adjusting the movement posture are embedded in the inner walls of the suspension plate (2) and the limiting plate (3).

3. The space on-orbit turntable limiting mechanism according to claim 1, characterized in that: An elastic layer (13) for reducing wear of the track (1) is fixedly connected to the inner walls of the suspension grooves (10) of the suspension plate (2) and the limiting plate (3).

4. The space on-orbit turntable limiting mechanism according to claim 1, characterized in that: The electric energy recovery device (14) is provided with a transformer, which is used to boost the direct current generated by the potential sensor (7) through frictional electricity, and then store it in the battery (5).

5. The space on-orbit turntable limiting mechanism according to claim 1, characterized in that: The electromagnet (4) is made of nickel-iron alloy, and the controller (6) is preset with an intelligent control algorithm module. The intelligent control algorithm module dynamically adjusts the current of the electromagnet (4) according to feedback from the potential sensor (7) and the ultrasonic rangefinder (12).

6. The space on-track turntable limiting mechanism according to claim 1 or 5, characterized in that: The controller (6) is provided with a remote communication module, which maintains communication with the ground control center via a satellite communication link, receives control instructions and uploads operating status data.

7. The space on-orbit turntable limiting mechanism according to claim 1, characterized in that: The tops of the suspension plate (2) and the limiting plate (3) are coated with a radiation-proof coating (8).

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